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<?php |
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namespace Sunnysideup\ArrayToCsvDownload\Api; |
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use Exception; |
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use SilverStripe\Assets\Filesystem; |
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use SilverStripe\Control\Controller; |
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use SilverStripe\Control\Director; |
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use SilverStripe\Control\HTTPRequest; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\ORM\SS_List; |
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use SilverStripe\View\ViewableData; |
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use Soundasleep\Html2Text; |
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class ArrayToCSV extends ViewableData |
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{ |
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/** |
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* can the csv file be accessed directly or only via controller? |
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* |
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* @var bool |
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*/ |
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protected $hiddenFile = false; |
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/** |
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* "parent" controller. |
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* |
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* @var null|Controller |
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*/ |
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protected $controller; |
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/** |
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* name of the file - e.g. hello.csv OR hello/foo/bar.csv OR assets/uploads/tmp.csv. |
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* |
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* @var string |
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*/ |
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protected $fileName = ''; |
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/** |
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* any array up to two levels deep. |
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* |
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* @var array |
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*/ |
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protected $array = []; |
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/** |
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* headers for CSV |
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* formatted like this: |
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* "Key" => "Label". |
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* |
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* @var array |
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*/ |
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protected $headers = []; |
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/** |
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* how many seconds before the file is stale? |
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* |
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* @var int |
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*/ |
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protected $maxAgeInSeconds = 86400; |
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/** |
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* how to glue multi-dimensional values |
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* |
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* @var string |
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*/ |
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protected $concatenator = ' | '; |
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private static $hidden_download_dir = '_csv_downloads'; |
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private static $public_download_dir = 'csv-downloads'; |
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/** |
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* internal. |
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* |
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* @var bool |
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*/ |
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private $infiniteLoopEscape = false; |
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/** |
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* typical array is like this: |
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* ```php |
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* [ |
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* [ |
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* "Key1" => "Value1" |
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* "Key2" => "Value2" |
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* "Key3" => "Value3" |
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* ]. |
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* |
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* [ |
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* "Key1" => "Value1" |
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* "Key2" => "Value2" |
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* "Key3" => "Value3" |
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* ]. |
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* |
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* [ |
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* "Key1" => "Value1" |
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* "Key2" => "Value2" |
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* "Key3" => "Value3" |
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* ]. |
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* ] |
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* ``` |
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* |
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* @param string $fileName name of the file - e.g. hello.csv OR hello/foo/bar.csv OR assets/uploads/tmp.csv |
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* @param array $array any array |
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* @param int $maxAgeInSeconds how long before the file is stale |
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*/ |
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public function __construct(string $fileName, array $array, ?int $maxAgeInSeconds = 86400) |
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{ |
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$this->fileName = $fileName; |
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$this->array = $array; |
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$this->maxAgeInSeconds = $maxAgeInSeconds; |
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} |
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/** |
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* ensures the file itself can not be downloaded directly. |
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* |
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* @param bool $bool |
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*/ |
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public function setHiddenFile(?bool $bool = true): self |
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{ |
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$this->hiddenFile = $bool; |
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return $this; |
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} |
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/** |
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* e.g. |
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* [ |
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* "Key1" => "Label1" |
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* "Key2" => "Label2" |
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* "Key3" => "Label3" |
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* ]. |
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*/ |
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public function setHeaders(array $array): self |
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{ |
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$this->headers = $array; |
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return $this; |
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} |
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public function setHeadersFromClassName(string $className): self |
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{ |
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$this->headers = Injector::inst()->get($className)->fieldLabels(); |
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return $this; |
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} |
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/** |
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* @param SS_List $list any type of list - e.g. DataList |
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*/ |
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public function setList(SS_List $list): self |
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{ |
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$this->array = $list->toNestedArray(); |
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return $this; |
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} |
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/** |
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* @param SS_List $list any type of list - e.g. DataList |
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*/ |
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public function setConcatenator(string $c): self |
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{ |
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$this->concatenator = $c; |
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return $this; |
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} |
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protected function flattenArray(array $array, ?string $prefix = ''): array |
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{ |
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$result = []; |
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foreach ($array as $key => $value) { |
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$newKey = $prefix . (empty($prefix) ? '' : '.') . $key; |
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if (is_array($value)) { |
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$result[$newKey] = http_build_query( |
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array_merge( |
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$result, |
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$this->flattenArray($value, $newKey) |
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), |
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'', |
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$this->concatenator |
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); |
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} else { |
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$result[$newKey] = $value; |
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} |
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} |
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return $result; |
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} |
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public function createFile() |
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{ |
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$path = $this->getFilePath(); |
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if (file_exists($path)) { |
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unlink($path); |
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} |
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// make sure there is no recursion in array... |
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foreach ($this->array as $index => $row) { |
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$this->array[$index] = $this->flattenArray($row); |
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} |
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$file = fopen($path, 'w'); |
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if ($this->isAssoc()) { |
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$row = $this->array[0]; |
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if (empty($this->headers)) { |
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$keys = array_keys($row); |
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$this->headers = array_combine($keys, $keys); |
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} |
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fputcsv($file, $this->headers); |
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} |
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foreach ($this->array as $row) { |
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$count = count($row); |
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$newRow = []; |
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foreach ($this->headers as $key => $label) { |
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try { |
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$newRow[$key] = Html2Text::convert(($row[$key] ?? ''), ['ignore_errors' => true]); |
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} catch (Exception $exception) { |
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$newRow[$key] = 'error'; |
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} |
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} |
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fputcsv($file, $newRow); |
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} |
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fclose($file); |
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} |
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public function redirectToFile(?Controller $controller = null, ?bool $returnLinkOnly = false) |
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{ |
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$this->controller = $controller ?: Controller::curr(); |
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$maxCacheAge = strtotime('Now') - ($this->maxAgeInSeconds); |
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$path = $this->getFilePath(); |
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$timeChange = 0; |
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if (file_exists($path)) { |
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$timeChange = filemtime($path); |
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} |
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if ($timeChange < $maxCacheAge) { |
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$this->createFile(); |
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} |
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if ($this->hiddenFile) { |
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if ($returnLinkOnly) { |
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return '/downloadcsv/download/'.$this->fileName; |
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} else { |
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return HTTPRequest::send_file(file_get_contents($path), $this->fileName, 'text/csv'); |
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} |
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} else { |
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if ($returnLinkOnly) { |
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return $this->getFileUrl(); |
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} else { |
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return $this->controller->redirect($this->getFileUrl()); |
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} |
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} |
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} |
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protected function getFileUrl(): string |
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{ |
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$path = $this->getFilePath(); |
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$remove = Controller::join_links(Director::baseFolder(), PUBLIC_DIR); |
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$cleaned = str_replace($remove, '', $path); |
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return Director::absoluteURL($cleaned); |
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} |
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protected function getFilePath(): string |
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{ |
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if ($this->hiddenFile) { |
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$hiddenDownloadDir = $this->Config()->get('hidden_download_dir') ?: '_csv_download_dir'; |
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$dir = Controller::join_links(Director::baseFolder(), $hiddenDownloadDir); |
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} else { |
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$publicDownloadDir = $this->Config()->get('public_download_dir') ?: 'csvs'; |
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$dir = Controller::join_links(ASSETS_PATH, $publicDownloadDir); |
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} |
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Filesystem::makeFolder($dir); |
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$path = Controller::join_links($dir, $this->fileName); |
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return (string) $path; |
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} |
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protected function isAssoc(): bool |
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{ |
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reset($this->array); |
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$row = $this->array[0] ?? []; |
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if (empty($row)) { |
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return false; |
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} |
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return array_keys($row) !== range(0, count($row) - 1); |
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} |
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} |
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